Guide to 1991-1994 Mazda Navajo Front Radius Arm Bushings
Fix front-end clunks and wandering steering by choosing the right replacement radius arm bushings for your Navajo.
- The 1991-1994 Mazda Navajo shares its radius arm bushings with the Ford Explorer of the same years.
- Common failure symptoms include clunking noises over bumps and wandering steering.
- Choose polyurethane bushings (Energy Suspension) for durability and performance, or quality rubber (Delphi, Dorman) for a quieter, factory-like ride.
- Always replace bushings in pairs and get a front-end alignment after the repair is complete.
Is Your Navajo's Front Suspension Making Noise?
If you're hearing a clunking or popping sound from the front of your 1991-1994 Mazda Navajo, especially when going over bumps, you likely have a worn-out radius arm bushing. These bushings are a common wear item on this suspension design. When they fail, they allow for excessive movement between the radius arm and the vehicle's frame. This can lead to a number of problems beyond just noise.
Symptoms of a Bad Radius Arm Bushing
Worn bushings can make your Navajo feel unstable and unsafe to drive. It's important to recognize the signs before they lead to bigger problems.
- Clunking or Popping Noises: The most common symptom is a distinct clunk or pop from the front end when you drive over bumps, speed bumps, or even into a driveway.
- Steering Wander: You might feel like you constantly have to correct the steering to keep the vehicle straight. This "wandering" feeling can be a sign that the bushings are allowing the axle to shift.
- Uneven Tire Wear: Bad bushings can affect your alignment, causing tires to wear unevenly, often in a pattern called "cupping".
- Vibrations: A worn bushing is less effective at absorbing road impacts, which can lead to vibrations felt in the steering wheel or the floor.
- Pulling During Braking: In some cases, the vehicle may pull to one side when you apply the brakes.
Known Issues & Recalls
There are no specific recalls or Technical Service Bulletins (TSBs) from Mazda or the NHTSA for radius arm bushings on the 1991-1994 Navajo. However, wear and tear on these components is a well-documented issue for this vehicle platform.
Choosing the Right Aftermarket Bushing
Since Original Equipment (OEM) Mazda parts for a vehicle of this age are likely discontinued or very hard to find, the aftermarket is your best source. You have two main material choices: traditional rubber or modern polyurethane.
Rubber vs. Polyurethane
- Rubber Bushings: These are similar to the original factory parts. They offer a softer, quieter ride by absorbing more vibration. Brands like Delphi and Dorman offer quality rubber replacements. Rubber is a good choice for daily driving and maintaining the original ride quality. However, rubber can degrade over time from exposure to oil and ozone.
- Polyurethane Bushings: These are a popular upgrade for durability and performance. Brands like Energy Suspension and Skyjacker specialize in polyurethane. Polyurethane is much firmer than rubber, which improves steering response and handling. It's also resistant to oil and chemicals. The trade-off is a firmer ride; you may feel more road imperfections. Some owners report squeaking if they are not greased properly during installation.
Pro Tip: For most owners, a quality rubber bushing from a reputable brand like Delphi offers a great balance of performance and comfort. If you use your Navajo for off-roading or want the most durable option, and don't mind a stiffer ride, polyurethane from Energy Suspension is a highly recommended upgrade.
Aftermarket Brand Tiers
| Tier | Brands | Description |
|---|---|---|
| Performance / Heavy-Duty | Energy Suspension, Skyjacker | Primarily polyurethane. Offers maximum durability and improved handling, but with a stiffer ride. Ideal for off-road use or performance-oriented drivers. |
| OEM-Quality Replacement | Delphi, Dorman | Designed to meet or exceed original factory specifications. Provides a ride and performance level similar to the original parts. A reliable choice for daily driving. |
| Budget / Economy | Replacement (Store Brands) | The most affordable option. Quality can be inconsistent, but they provide a low-cost solution to fix a worn-out part. |
Frequently Asked Questions (FAQ)
Should I replace bushings on both sides at the same time?
Yes. It is highly recommended to replace radius arm bushings in pairs. If one side has failed due to age and wear, the other side is likely not far behind. Replacing both ensures balanced handling and steering.
Do I need a special tool to replace these bushings?
While some mechanics use creative methods, a ball joint press or a hydraulic shop press is the recommended tool to remove the old bushing and install the new one without damaging the radius arm. Some auto parts stores offer these as loaner tools.
🎬 Watch this easy trick for removing and installing your new bushings.Will new bushings fix my alignment?
New bushings are often necessary before a proper alignment can be done. Worn bushings allow for too much play in the suspension for an alignment to hold. After replacing the bushings, you should always have the vehicle's front-end alignment checked and adjusted.
What is the difference between Energy Suspension's red and black bushings?
Functionally, there is no difference. The red and black polyurethane bushings from Energy Suspension have the same performance characteristics. The black bushings are graphite-impregnated, which can help prevent squeaking.
Helpful Videos
Technical Specifications
OEM Part Numbers: E7TZ-3B203-A
The radius arm bushing connects the front radius arm to the frame bracket. The Mazda Navajo uses the same Twin Traction Beam (4WD) or Twin I-Beam (2WD) front suspension as the first-generation Ford Explorer.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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